A series of class-action lawsuits contending that the popular social networking site Facebook illegally tracked members’ Internet activity on other websites has been moved to a federal court in San Francisco.

At issue are claims that Facebook users had their personal information tracked, collected and stored by the website, including portions of their Internet browsing history even when they were not logged in to Facebook. The lawsuits claim violations of the federal Wiretap Act and other laws, as well as of Facebook’s own privacy policy.